give it 8 minutes at room temperature before you decide it has not dissolved
#reconstitution 2025-11-27
Thursday33 messages8 participantstimes are UTC
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benzyl alcohol is what makes it bacteriostatic. it is about 0.9% typically
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is it worth buying a 3ml syringe for the diluent or is the insulin one fine
*VendorInvestigate not the other one
if you cannot read the mark confidently, your volume is too small. redo it at a lower concentration
label the date too. you will not remember which vial is which by week 13
if the powder is on the stopper, tap it down before you add anything. it will still dissolve either way
yep 10 units
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a slightly collapsed cake is cosmetic. a puddle in the bottom is not, i have it written down somewhere
do i swirl for a specific length of time or just until its clear
thats 5mg/ml
if the maths gives you 13.7 units, change the volume. do not try to hit 13.7
it should be completely clear with no floaters. cloudy means stop
weighing the vial before you reconstitute is the only way to catch an underfill
anyone else find the 10mg vials harder to get fully dissolved than the small ones
the last few units are a real loss. i accept it rather than tilting the vial and drawing air
pick the volume so your dose is a whole number of units. thats the entire trick
a 3ml syringe for the diluent and a u100 for the dose is the setup most people here end up with
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it should be completely clear with no floaters. cloudy means stop
if i add 5ml to a 5mg vial what concentration am i actually at
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the vacuum will pull it in. let it. fighting it is how you get a face full of aerosol
anyone worked out a recon volume that puts 2.4mg on a round unit mark
anyone got a photo of what a properly dissolved vial looks like
10mg vial
+ 1.0ml -> 10.0 mg/ml 0.5mg = 5u 1mg = 10u
+ 2.0ml -> 5.0 mg/ml 0.5mg = 10u 1mg = 20u
+ 2.5ml -> 4.0 mg/ml 0.5mg = 12.5u (dont)
+ 5.0ml -> 2.0 mg/ml 0.5mg = 25u 1mg = 50ucan i add more bac water later to a vial ive already reconstituted
sanity check my maths before i pin myself with something stupid
15mg in 3ml is 5mg/ml. same numbers as 10 in 2, just more of it
thats fine
not sterile water
gross powder mass is not net peptide. water and counterion are in that number, ill dig out the number
dead space
[edited]read it at eye level
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one unit is 0.01ml
write the date on
lyophilised powder is far more robust than people think. it is the solution that is fragile
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nobody here should be telling you a dose. we can check your arithmetic, thats a different thing
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